The EU's planned legislation change to remove roaming data, call, and text charges has now come into effect from June 15. Charges will be the same in any EU country as they are on your home network provided you're an EU resident to begin with.

This means that now when you go on holiday to any of the 28 EU member states you can carry on using your phone as normal and you won't be hit with bill shock from excessive add-on charges. It's understood that you must still follow reasonable and fair use policies though, so don't think you can just use more data on your hols than you do at home, for example.

Non-EU member states which are also members of the European Economic Area, that is Norway, Iceland, and Liechtenstein, will also have roaming charges dropped as part of the change, but this will happen within the coming weeks after the June 15 date.

In terms of what constitutes "reasonable" or "fair" use; the maximum data in gigabytes (GB) you can use in another EU member is equal to your pre-VAT monthly contract tariff fee divided by €7.7, then multiplied by two. If the final figure exceeds your normal allowance then your limit is unchanged.

Also note that we're not sure what's going to happen after the UK leaves the EU with Brexit. Of course there's quite a bit of time before this will be completed, you've likely got a couple of years of data roaming holidays between and then, but after Brexit is complete it's possible some kind of roaming charges may return to Brits holidaying on the continent.